Key duplicating machine



FIG. 1 is a top view of a key duplicating machine showing my new design;

FIG. 2 is a front view thereof;

FIG. 3 is a bottom view thereof;

FIG. 4 is a rear view thereof;

FIG. 5 is a left view thereof; and

FIG. 6 is a right view thereof. 

The ornamental design for a key duplicating machine. 